San Francisco has proposed fining businesses and residents that do no sort compostables, recyclables and trash. John Cote writes for the San Francisco Chronicle that the measure is intended to increase the City's diversion rates by decreasing contamination:

The plan to require proper sorting of refuse would be the nation's first mandatory recycling and composting law. It would direct garbage collectors to inspect the trash to make sure it is put into the right blue, black or green bin, according to a draft of the legislation prepared by the city's Department of the Environment.